Twist knob of a tool holding device



FIG. 1 is a top perspective view of a twist knob of a tool holding device;

FIG. 2 is a bottom perspective view thereof;

FIG. 3 is a front elevational view thereof;

FIG. 4 is a rear elevational view thereof;

FIG. 5 is a right-side elevational view thereof;

FIG. 6 is a left-side elevational view thereof;

FIG. 7 is a top plan view thereof;

FIG. 8 is a bottom plan view thereof; and,

FIG. 9 is an exploded top perspective view thereof, showing an elongated channel body of a tool holding device that is configured to engaged with a shaft of the twist knob.

The broken line showing of the elongated channel body in FIG. 9 is included for the purpose of showing environmental structure and forms no part of the claimed design. 

CLAIM The ornamental design for a twist knob of a tool holding device, as shown and described. 